mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-31 16:02:52 +01:00
85d6ed81b7
void foo() { __builtin_unreachable(); }
It will output the following on Darwin X86:
_func1:
Leh_func_begin0:
pushq %rbp
Ltmp0:
movq %rsp, %rbp
Ltmp1:
Leh_func_end0:
This prolog adds a new Call Frame Information (CFI) row to the FDE with an
address that is not within the address range of the code it describes -- part is
equal to the end of the function -- and therefore results in an invalid EH
frame. If we emit a nop in this situation, then the CFI row is now within the
address range.
llvm-svn: 108568
16 lines
419 B
LLVM
16 lines
419 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck -check-prefix=CHECK-NO-FP %s
|
|
; RUN: llc < %s -mtriple=x86_64-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
|
|
|
|
define void @func() {
|
|
entry:
|
|
unreachable
|
|
}
|
|
; CHECK-NO-FP: _func:
|
|
; CHECK-NO-FP-NOT: movq %rsp, %rbp
|
|
; CHECK-NO-FP: nop
|
|
|
|
; CHECK-FP: _func:
|
|
; CHECK-FP: movq %rsp, %rbp
|
|
; CHECK-FP-NEXT: Ltmp1:
|
|
; CHECK-FP: nop
|